Drivers have been experiencing major traffic hold-ups on the M4 eastbound between junction 12 at Theale and Juction 13 at Newbury this morning.
The jam was caused by a collision between a lorry and two cars.
Police were called at 7.15am and two lanes were blocked by the crash.
Although paramedics were called it is understood no-one was injured and the Highways Agency is now in control of the incident.
There is still debris in the road, but the lorry is now on the hard shoulder.